He took the field alongside the Denver Broncos' cheerleading squad, the Pony Express, dressed in the team's glittering white ensemble. His appearance was later a plot point on an episode of Mork and Mindy.

Image: Bierman/Associated Press

Image: bierman/Associated Press

Image: bierman/Associated Press

In the lead up to Super Bowl 50, Williams' daughter Zelda shared the memory on Instagram.

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